51086518480253 has 2 divisors, whose sum is σ = 51086518480254. Its totient is φ = 51086518480252.

The previous prime is 51086518480211. The next prime is 51086518480259. The reversal of 51086518480253 is 35208481568015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38312163261124 + 12774355219129 = 6189682^2 + 3574123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51086518480253 is a prime.

It is a super-3 number, since 3×51086518480253³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51086518480259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25543259240126 + 25543259240127.

It is an arithmetic number, because the mean of its divisors is an integer number (25543259240127).

Almost surely, 2^{51086518480253} is an apocalyptic number.

It is an amenable number.

51086518480253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51086518480253 is an equidigital number, since it uses as much as digits as its factorization.

51086518480253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216000, while the sum is 56.

The spelling of 51086518480253 in words is "fifty-one trillion, eighty-six billion, five hundred eighteen million, four hundred eighty thousand, two hundred fifty-three".